Finding the Fourth Proportional to 305,761.47, 421,936.61 and 169,804.05
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Solution
The fourth proportional to 305,761.47, 421,936.61 and 169,804.05 is: 234,321.69
Step by Step Solution
- Step 1: Write the proportion equation
305,761.47 : 421,936.61 = 169,804.05 : x - Step 2: Convert to fraction form
305,761.47/421,936.61 = 169,804.05/x - Step 3: Cross multiply
305,761.47x = 421,936.61 × 169,804.05 - Step 4: Simplify right side
305,761.47x = 71,646,544,372.25 - Step 5: Solve for x
x = 71,646,544,372.25/305,761.47 - Step 6: Final answer
x = 234,321.69
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.